Truck is an 02 with the 4.6 auto 4x4, so its got the 8.8 rear end... found a good deal on a 99-04 mustang gt carrier with an LS and 4.10s, would this work in the f150 8.8 rear? Also, what am I lookin at labor wise to put it in?

 

In a word, no.

Unfortunately, the Mustang 8.8 uses a different axle spline count than the pickups. The car 8.8 has 28 splines at the axle ends going into the differential, and the F150 8.8 has 31 splines at the axle ends going into the differential.

 

spoken perfectly! I made the mistake when i was rebuilding my rear end and bought some 28-spline spider gears.... so defaintely make sure that if you get a complete carrier to make sure that its a 31- spline

 

The 05-up mustang 8.8's got 31 spline as standard, so if you can find one out of an 05 or newer they will work.

 

I didnt know that.... thanks for posting

 

x2!

 

did they change the overall width of the axle and mounting locations for the mustangs as well?

i've always wondered if an 8.8 from a ranger or mustang would have perches at the right locations and not be too narrow.

edit: woops, misread that one

 

I think the Cobra model was the only one that got the 31 spline diff starting in 2000. Maybe more of them later.

 

Will the side gears (spider) from the truck fit the stang carrier? If so since he has to do a whole set up he could put the 31"s in the stang carrier and use the truck axles.
Or is this a really stupid question?

 

I'm pretty certain that won't work. In fact, I remember a guy trying it one time. He bought the Mustang TL carrier and then the spider gears and it still would not work.

 

So that was a stupid question-not my first, thanks.

 

or you can find one from a nbs f150 it works also. mine was bought for an 06

 

My axle is howling when the power is on and quiets when the power is off. It also quiets down on the expressway over 60 mph.

It is a 98 Lariat 4.6, automatic, 3.73 rear gear with limited slip and 102k miles. I am the original owner and have taken good care of the truck. This the first real problem.

We replaced the U-joints, changed the rear end dope and added the friction modifier. This only helped slightly. There were some fine metal shavings at the bottom of the housing which was cleaned out.

Can anyone advise what is causing the howl? Thanks,